New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods
Nitrogen availability limits marine productivity across large ocean regions. Diazotrophs can supply new nitrogen to the marine environment via nitrogen (N 2 ) fixation, relieving nitrogen limitation. The distributions of diazotrophs and N 2 fixation have been hypothesized to be generally controlled...
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Online Access: | http://livrepository.liverpool.ac.uk/3091716/ https://doi.org/10.1038/s41396-020-0703-6 http://livrepository.liverpool.ac.uk/3091716/1/Tang2020_AuthorProof.pdf |
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ftunivliverpool:oai:livrepository.liverpool.ac.uk:3091716 2023-05-15T17:31:21+02:00 New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods Tang, Weiyi Cerdán-García, Elena Berthelot, Hugo Polyviou, Despo Wang, Seaver Baylay, Alison Whitby, Hannah Planquette, Hélène Mowlem, Matthew Robidart, Julie Cassar, Nicolas 2020 text http://livrepository.liverpool.ac.uk/3091716/ https://doi.org/10.1038/s41396-020-0703-6 http://livrepository.liverpool.ac.uk/3091716/1/Tang2020_AuthorProof.pdf en eng Springer Science and Business Media LLC http://livrepository.liverpool.ac.uk/3091716/1/Tang2020_AuthorProof.pdf Collapse authors list. Tang, Weiyi, Cerdán-García, Elena, Berthelot, Hugo, Polyviou, Despo, Wang, Seaver, Baylay, Alison, Whitby, Hannah orcid:0000-0002-0064-3052 , Planquette, Hélène, Mowlem, Matthew, Robidart, Julie et al (show 1 more authors) and Cassar, Nicolas (2020) New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods. The ISME Journal, 14 (10). pp. 2514-2526. Article NonPeerReviewed 2020 ftunivliverpool https://doi.org/10.1038/s41396-020-0703-6 2023-01-19T23:55:30Z Nitrogen availability limits marine productivity across large ocean regions. Diazotrophs can supply new nitrogen to the marine environment via nitrogen (N 2 ) fixation, relieving nitrogen limitation. The distributions of diazotrophs and N 2 fixation have been hypothesized to be generally controlled by temperature, phosphorus, and iron availability in the global ocean. However, even in the North Atlantic where most research on diazotrophs and N 2 fixation has taken place, environmental controls remain contentious. Here we measure diazotroph composition, abundance, and activity at high resolution using newly developed underway sampling and sensing techniques. We capture a diazotrophic community shift from Trichodesmium to UCYN-A between the oligotrophic, warm (25-29 °C) Sargasso Sea and relatively nutrient-enriched, cold (13-24 °C) subpolar and eastern American coastal waters. Meanwhile, N 2 fixation rates measured in this study are among the highest ever recorded globally and show significant increase with phosphorus availability across the transition from the Gulf Stream into subpolar and coastal waters despite colder temperatures and higher nitrate concentrations. Transcriptional patterns in both Trichodesmium and UCYN-A indicate phosphorus stress in the subtropical gyre. Over this iron-replete transect spanning the western North Atlantic, our results suggest that temperature is the major factor controlling the diazotrophic community structure while phosphorous drives N 2 fixation rates. Overall, the occurrence of record-high UCYN-A abundance and peak N 2 fixation rates in the cold coastal region where nitrate concentrations are highest (~200 nM) challenges current paradigms on what drives the distribution of diazotrophs and N 2 fixation. Article in Journal/Newspaper North Atlantic The University of Liverpool Repository The ISME Journal 14 10 2514 2526 |
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The University of Liverpool Repository |
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ftunivliverpool |
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English |
description |
Nitrogen availability limits marine productivity across large ocean regions. Diazotrophs can supply new nitrogen to the marine environment via nitrogen (N 2 ) fixation, relieving nitrogen limitation. The distributions of diazotrophs and N 2 fixation have been hypothesized to be generally controlled by temperature, phosphorus, and iron availability in the global ocean. However, even in the North Atlantic where most research on diazotrophs and N 2 fixation has taken place, environmental controls remain contentious. Here we measure diazotroph composition, abundance, and activity at high resolution using newly developed underway sampling and sensing techniques. We capture a diazotrophic community shift from Trichodesmium to UCYN-A between the oligotrophic, warm (25-29 °C) Sargasso Sea and relatively nutrient-enriched, cold (13-24 °C) subpolar and eastern American coastal waters. Meanwhile, N 2 fixation rates measured in this study are among the highest ever recorded globally and show significant increase with phosphorus availability across the transition from the Gulf Stream into subpolar and coastal waters despite colder temperatures and higher nitrate concentrations. Transcriptional patterns in both Trichodesmium and UCYN-A indicate phosphorus stress in the subtropical gyre. Over this iron-replete transect spanning the western North Atlantic, our results suggest that temperature is the major factor controlling the diazotrophic community structure while phosphorous drives N 2 fixation rates. Overall, the occurrence of record-high UCYN-A abundance and peak N 2 fixation rates in the cold coastal region where nitrate concentrations are highest (~200 nM) challenges current paradigms on what drives the distribution of diazotrophs and N 2 fixation. |
format |
Article in Journal/Newspaper |
author |
Tang, Weiyi Cerdán-García, Elena Berthelot, Hugo Polyviou, Despo Wang, Seaver Baylay, Alison Whitby, Hannah Planquette, Hélène Mowlem, Matthew Robidart, Julie Cassar, Nicolas |
spellingShingle |
Tang, Weiyi Cerdán-García, Elena Berthelot, Hugo Polyviou, Despo Wang, Seaver Baylay, Alison Whitby, Hannah Planquette, Hélène Mowlem, Matthew Robidart, Julie Cassar, Nicolas New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
author_facet |
Tang, Weiyi Cerdán-García, Elena Berthelot, Hugo Polyviou, Despo Wang, Seaver Baylay, Alison Whitby, Hannah Planquette, Hélène Mowlem, Matthew Robidart, Julie Cassar, Nicolas |
author_sort |
Tang, Weiyi |
title |
New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
title_short |
New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
title_full |
New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
title_fullStr |
New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
title_full_unstemmed |
New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
title_sort |
new insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://livrepository.liverpool.ac.uk/3091716/ https://doi.org/10.1038/s41396-020-0703-6 http://livrepository.liverpool.ac.uk/3091716/1/Tang2020_AuthorProof.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://livrepository.liverpool.ac.uk/3091716/1/Tang2020_AuthorProof.pdf Collapse authors list. Tang, Weiyi, Cerdán-García, Elena, Berthelot, Hugo, Polyviou, Despo, Wang, Seaver, Baylay, Alison, Whitby, Hannah orcid:0000-0002-0064-3052 , Planquette, Hélène, Mowlem, Matthew, Robidart, Julie et al (show 1 more authors) and Cassar, Nicolas (2020) New insights into the distributions of nitrogen fixation and diazotrophs revealed by high-resolution sensing and sampling methods. The ISME Journal, 14 (10). pp. 2514-2526. |
op_doi |
https://doi.org/10.1038/s41396-020-0703-6 |
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The ISME Journal |
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14 |
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10 |
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2514 |
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2526 |
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1766128861224894464 |